Internal-combustion engine.



W. E. VEB PLAYCK.,

asas,`

with, in!

Verplarck His Ntomeg.

inventor WE liamE W w. E. VER PLANCK. HHHRNAL COMBUSTl-ON ENGNE.APPLlCATiON FILED AUG.21915.

Patente@ Nov. 6, im?.

4 SHEETS-SHEET 4.

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onirico.

WILLIAM EVERETT VEB IPLANCK, F ERIE, PENNSYLVANIA, ASSIGNO' TO GENERALELECTRIC'COMPNY, A CORPOR'ATION OF NEW YORK. l

NTERNAL-COMBUSTION ENGINE.

Application filed August 2, 1916.

To all wim/n 4t may concern.'

Be it known that I, WILLIAM E. VER Praxen, a citizen of the UnitedStates, residing at Erie, in the county of Erie, State of Pennsylvania,have invented certain new and useful Improvements in Internal-CombustionEngines, of which the following is a specification.

rlhe present invention relates to two-cycle internal combustion enginesof the high compression type, that is, of the type in which, on thecompression stroke, pure air is first compressed to a pressure such thatitstemperature is above that of the igniting point of the fuel afterwhich the charge of fuel is injected b y a blast of air. l/Vith suchengines it is customary to provide a scavenger pump driven from thecrank shaft for supplying scavenging air and a compressor also drivenfrom the crank shaft for supplying blast air for injecting the fuel andair for starting the engine.

The object of the present invention is to provide an improvedarrangement of parts in an engine of this type whereby the engine willbe compact so as to occupy a minimum amount of space, and at the sametime the parts will be readily accessible for inspection and repair. Theengine is more particularly intended for use Aon av self-propelledvehicle, as a gas electric car, of the type wherein theengine drives anelectric generator which in turn supplies electric current to motorslocated on the car axles. 1n such installations the available'cab spaceis limited and it is necessary to conserve such space as much aspossible.

For a consideration of what I believe to be novel and my invention,attention is directed to the accompanying specification and the claims.appended thereto.

ln the accompanying drawing, Figure 1 is a top plan view of an engineembodying my invention; Fig. 2 is a section taken on line 2 2, Fig. 4.with certain of the parts shown in section for purposes of illustration;Fig. 3 .is a side elevation of a crank shaft; Fig. 4 is a verticalsection taken on line 4 4, Fig. 1; Fig. 5 is a section taken on the line5 5, Fig. 2: Fig'. 6 is a top plan view of a pair of cylinders. as shownin Fig. 5, looking at them in the line of their axis; Fig. 7 is a detailview illustrating the arrangement for operating the fuel injectors; Fig.8 is a similar view illustrating the arrangementfor Specification ofLetters Patent. v

Patented Nov. 6, 191'?.

Serial No. 112,845.

operating the fuel pumps, and Fig. '9 is a section taken on the line9-9, Fig. 1.

Referring to the drawings, Fig. 1, 10 indi- I cates generally the enginewhich, in the present instance, is shown as directly connected to anelectric generator 11, which in the case of a gas electric car is thegenerator which supplies current to the motors for propelling it. Theengine comprises eight cylinders arranged in sets of two each, therebeing four sets, as indicated at 12, 13, 14 and 15. The two cylinders ofeach set are `arranged side by side in a plane parallel to thelongitudinal axis of the engine, and the two` sets 12 and 14 arearranged on one side of, and in a plane at an angle to, the centralvertical plane of the engine, and the two sets 13 and 15 are similarlyarranged on the opposite side of such central plane. The four cylindersof sets 12 and 14 thus lie in one plane, and the four cylinders of sets13 and 15 lie in a second plane, the two planes being at an angle toeach other, with the cylinders of the first two sets directly oppositethose of the. second two sets. This gives a V- shaped arrangement of thecylinders, the anglev in the present instance being about '720. The twolcylinders of each set, as best shown in Fig. 5, which is a sectionthrough the set 12, are arranged side by side in pan allel relation toeach other and have a common combustion chamber 16. This combustionchamber may be of any suitable contour, but it is preferably of aflattened cone-shape. such as is described and claimed in theapplication of Henri G. Chatain, Serial No. 121,081, tiled September 19,A1916. The piston 17 in the one cylinder controls the eX- haust ports18, and the piston 19 in the other cylinder controls the scavengingports 20. 21 indicates the crank shaft of the engine. Referringparticularly to Figs. 3 and 4, it comprises two end bearing sections 22and 23 and an intermediate bearing section 24 supported in suitablebearings 26 and 27 inthe engine base and crank case 28. The

shaft has in substance only two cranks. a

cated side by side in a suitable casing and are operated from a singlelever actuated by an eccentric on the crank shaft. Referring to Fig. 8,61 indicates the casing of one pair of pumps, for example, the pumpswhich supply the two pairs of cylinders 12 and 13; 62 one of the pumpcylinders, and 63 its plunger. It v-ill be understood that the otherpump cylinder of the pair is located in casing G1 directly behind thisone. 64 indicates the actuating lever lfor the plungers for these twopumps. The pumps are shown as being of the variable zone displacementtype, that is, of the type in which the quantity of fuel delivered isregulated by varying the region .of reciprocation of the plun-4 ger, andfor" this purpose the lever 64 is fulcrumed on an eccentric G5 which isturned to raise and lower the fulcrum of the lever thus regulating thepumps as is well understood. As already stated, the two cylinders ofeach pair ot' pumps are. placed side by side inthe same casing. and theone end of the lever 64 is provided with two rollers 6G which rest onthe ends of the ,two pump plungers to drive them simultaneously. Theother end of the lever GJ.- earries a shoe 67 which engages an eccentricGS on the crank shaft. The location of the two fuel pump eccentrics onthe crank shaft is shown in Figs. 3 and 4, the same being indicated bynumerals 68a and 381). Located above each pair of pumps is a hand lever69 having a rod 70 which extends down through casing G1 and engages theend of lever (it which carries the rollers Gti, The pumps may beactuated by hand by moving the lever. Two hooks are provided inconnection with the hand lever G9, a liook 7l for hooking the leverdown, thus putting` the pumps out of service, and a hook 72 for hookingit up out of the way. The eecentrics GS and 68 are arranged to operatethe pumps so as t.o deliver fuel to the respective `injectors at a timewhen they are closed. and the two fuel pump eccentrics are accordinglydisplaced about 190 from the two cams 57 which open the correspondinginjectors. lt will be understood that the other pairof pumps arrangedafter t-he same manner as the pair just described.

The exhaust ports 1S .of the two sets of cvlinders 1i) and ll areconnected to an eX- liaust` conduit 7? (Fig. ll and the exhaust' portsof the two sets of cylinders 13 and 'l5 are connected to an exhaustconduit 74.'

These two conduits merge into a common conduit which leads to a suitablemuffler (not shownlf lach set of cylinders is similarly constructed.and. as shown in Figs. 2 and in connection with sets l and they areprovided with water ackets 7G for the circulation of cooling water. Thewater ackets extend well over the heads of the cylinders and arearranged to bring the cooling Water up so as to cool the fuel injectors.This arrangement forms the subject matter of my application, Serial No.112,843, tiled of even date herewith, in which application it isdescribed more in detail and claimed. 77 indicates the inlet pipesthrough which cooling water is fed to the jackets and 7S the outletpipes by which it is conducted away therefrom. The inlet pipes 77 areconnected by pipes 79 and SO to a common pipe 81 which leads from aradiator (not shown) and the outlet pipes 7S are connected by pipes 8'2and 83 to a common pipe Sl which leads to such radiator. In the case ofa car engine the radiator is advantageously placed on the roof of thecar, and in Fig. 1, indicatesl a tank which may be suitably mounted onthe car. and connected to pipes 7 9 and S1 by pipes S6 and S7, and intowhich the water from the radiator and engine jackets may be drained incold weather to prevent freezing.

T he. cylinders and pistons are lubricated by splash lubrication in theusual manner, and in the walls .of each of the cylinders scraper ringsSS are provided for scraping back lubricant to prevent an excessiveamount from passing up into the cylinder.-

Surrouuding thecylinders outside the water jackets are chambers S9 (Fig.2) which form a part'of the receiver for thescavenging air and fromwhich scavenging air is supplied to the` cylinders through thescavenging ports when they are uncovered by thev pistons which controlthem` This figure illustrates the manner in which the ports 2O lead fromthechambers 89 across the watercooling space. The chambers S9communicate directly through openings 90 with another portion 91 of thescavenging air receiver and these portions 91 in turn communicate withthe portions of the receiver' indicated at 92 in Fig. 4. It will benoted that all the space available in the crank case and thatsurroimding` the cylinders is utilized as a scavenging air receiver.This has the advantage that it puts to a useful purpose. space whichwould otherwise be wasted and also, since a portion of the receiverdirectly surrounds the cylinders, avoids the use of piping connectionsfor conveying the scavenging air from the receiver to the sca vengingports.A

Referring now to Fig. 4. indicates the cylinder ofthe scavenging pumpand 94 the piston. It is located vertically over the crank shaft betweenthe two sets of cylinders 14 and 15 and is supported by the engine frameQS. which is removable and is held in place by bolts 96. The pump isdouble acting and the piston comprises a trunk 97 having a fianged head9S.. The trunk 97 slides in a guide cylinder 99 which guides the piston,and it indicates the cylinder liead les the upper position as shown by aspring is connected by a rod to a bearing1 101 on the crank shaft, whichbearing isl located between crank sections 33 and 102 indicates theWrist pin which connects the rod 100 to the trunk 97 lrof thepiston 94,and 103 indicates the strap by which such rod is connected to thebearing 101. 10 indicates oil scraper rings located in the Wall orP thecylinder 99 to scrape back lubricant as referred to aboi'ein connectionwith the scraper rings 88 in the engine cylinders. 105 and 106 indicateports connected with the upper and lower ends of cylinder 93 and whichact al'- ternately as exhaust prts and inlet ports. The ports arecontrolled by a reciprocating Valve 10T Wnich Works in a casing 108.rlie Valve 10T comprises an annular Wall 109 fastened to a hollow steinby Webs 111, and two enlarged ends 112 and 113 which slide in shortcylinders 11e and 115 and control dii'ectly the ports 105 and 106. TheWall 109 is spaced from the, Wall of casing` 108 to iorni an annularchamber 116 which is the admission or suction chamber from which air issupplied to the cylinder 98. rlllic space inside the annular Wall 109communicates With the scavenging air receiver Air is supplied to theadmission or suction chainber 116 through a conduit 117 (Fig. 2) whichin the case of a car engine preferably connects Witha trunk beneath thecar floor (not shown) through an opening 118. rlie upper end oftheconduit 11T ternn'natcs in a Valve casing ,119 which communicateswith the suction chamber 110 through a passage 120 e and Within theValve casii 119 is valve 121 (Fig. 9) normally held in and when in thisposition the conduit 11 is in lull communication with the suctiolchamber 116. The valve 121 is adapted be moved by pressure to aposition` Wl seats on the rali/'e seat and shuts on l,u

communication. The yalye 121 comprises an annular portion 12ei- Wliiclints casing 11?;

the position Where it seats f T he Valve 121 `forms a f system for the eof 'the car ancL in 'f for starting also, and i'.

suction and lie and also the rlinder head held in place by bolts and canbe 9 noyed Jfor inspection and repair is. between the two sets ofcylinders the crank air i coinreadily of the pai Located 12 and 1B, andvertically over shaft7 is i, tiro-stage reciprocating presser 'iersupplying blast air 'E a Y injectors. -ieierriugA to Fig. 1l indica esthe cylinder oi the lirst or low pres re stage, andL 1/11 the cylinderoi? the second or high pressure sta They are ir inf ld in verticalalineine aud are supported on the engine frame 28. 112 indicates pistonof the lor: sure sterre. ieri.

,i if

integral with the hea-d of which is piston 1513 of the higli pressurestag is supplied to the cylinder l por. i] D mi: f mi ports il in icyiincei nai with an annular iam rfi th ff as desired.

utilized to tnrrn ressor valves are lr eylinc ie dish t CIK the enginecylinder as shown in Fig. 1. The tubes 153 are arranged in casings 160which are connected by openings 161 to admission ports 162 in the wallof the high pressure cylinder 111. Extending across the cooling chamberformed by the jacket 156 are a series of tubes 163 which connect thechamber 152 into which the first stage of the compressor discharges to achamberl 1611-, from which it is fed through the casing 160 to thecylinder 141 of the second stage. `From this cylinder the air isdischarged through a discharge valve 165 to a chamber 166 from which itis led by a series of pipes 167 directly to the fuel injectors 16 (seeFigs. 1 and 2). In the present instance there are four fuel injectorsand hence there are four pipes 167. By this arrangement 1 avoid the useof storage reservoirs for the high pressure air required to blovv thefuel into the engine. 168 indicates a safety valve for the low presssurechamber 161 and 169 a safety valve for the high pressure chamber 166.Complete details of this tvvoestage compressor are not shovvn anddescribed, as it is not essential toa complete understand ing of theinvention claimed herein and forms the subject matter of a separateapplication, Serial'No. 112,814, liled of even date herewith. V

The engine is started by means of .supplying compressed air to thescavenging pump to operate it as an air motor. To this end a startingpipe 170 (Figs. 1 and 9) is provided which leads fromv an air supplyreservoir (not shown) and connects vvith the valve casing 119 above thevalve 121 so that when compressed air is admitted it ivill act -on thevalve to force it against the seat 123 Where it shuts ofi communicationbetvveen the conduit 117 and-the valve casing 119, and at the same timeplaces the space above it and hence pipe 170 in communication ivithpassage 120. Connected with the scavenging air receiver 92 is apressurerelief or vent valve 171 which, when opened, connects suchreceiver to atmosphere. This is opened Whenever the engine is to bestarted so as to prevent undue pressure being built up in the receiver,thus 'retarding the starting operation. The valve is normally heldseated by a spring 17 2 and is provided with an extension 173 forming apiston `which slides in a cylinder 17d. Connected vvith the cylinder 174beneath the piston 173 is a branch pipe 175 leading from air startingpipe 170 so that Whenever air is admitted to the air start-ing pipe 170to start the engine it will also act on the piston 173 to open the valve171. 176 is a lined cup-shaped member which forms a seat for one end ofspring 172, and also acts as a stop to limit the opening movement ofvalve 171. The spring 172I is strong enough to hold the valve 171 seatedagainst normal scavenging air pressure,

but will permit the valve to open in case of excess pressure. In thisrespect it functions as a safety valve for the scavenging air receiver.This air starting arrangement is not claimed herein, as it forms thesubject matter of my application Serial No. 112.811

I'iled of even date herewith.

The engine and generator as a vvhole are flexibly supported by springs,one of which is indicated at 177, Fig. 4.-, and they are also supportedon a felt cushion as indicated at 178. lThe purpose of this arrangementin the case of a gas-electric car is to-prevent the vibration of theengine being transmitted to the car.

Referring now to Fig. 1, 180 indicates a fuel tank which is connected tothe fuel pumps by pipe 181. The engine is designed to operate on heavyfuel, and at 182 is shovvn' a second fuel tank vvhich contains a lighteroil for starting purposes and which is connected to the pipe 181 by apipe 183. Suitable valves as indicated at 184 and 185 are provided inpipes 181 and 183 to control the fuel supplies. 186 indicates thecontroller box. It is bolted directly to the engine frame and theelectrical connections from it pass down directly through an opening inthe bottom of the. car to the motors. 187 indicates the control leverfor the fuel pumps, it being suitably connected to turn the eccentricsto raise and lovver the fulcrum of the fuel pump actuating levers 61. 1nthe present instance a control handle arrangement, such as is shown inmy Patent 1,094,406, April 21, 1914, is indicated. 188 indicates thehandle of the reversing switch and 189 the handle of the controller forthe electrical connections. 1t is to be noted that the controller box,since it is directly mounted on the engine frame, vvill .partake of themovements of the frame. This is of particular importance in a case likethe present vvhere the engine and generator are iexibly supported, sinceif the controller box were supported independently of the engine frame,the frame in vibrating would move relative to the controller box andhence vary the adjustments of the Aregulating mechanisms independentlyof the control levers. This arrangement also has the advantage that itgreatly decreases the number of electrical connections and the number ofmechanical joints.

190 indicates a hand lever for turning the crank shaft manually to bringthe parts into position for starting the engine. 19?J (Fig. 2) indicatesa lubricatingoil pump which is used to supply lubricant for the pistonheads of the engine, and 193 indicates a pressure gage. The engine hasan inelosed crank case and 1941 indicates doors or panels which are heldin place by suitable fastenings 195 and Which may be removed to giveaccess to the crank case..y

located betvveen the cylinders adjacent the pump for supplying blast airfor the .fuel injectors, removable heads for the cylinders of said pumpand compressor, and rods con-- necting their plungers to the said shaft.

l. ln an internal combustion engine, the combination of a shaft,cylinders located on opposite sides of the vertical plane of the shaft,pistonsin the cylinders, rods connecting them to the shaft, a scavengingpump, a casing having a reciprocating valve for the pump therein, and acompressor, all located side by side between the cylinders andvertically over the shaft, rods connecting them to the shaft, andremovable heads for the valve casing and for the cylinder of the pumpand compressor.

5. In an internal combustion engine, the combination of a shaft,cylinders located on opposite sides of the vertical plane of the shaft,pistons in the cylinders, rods con' necting them to the shaft, an airpump located vertically over the shaft, a casing adjacent the pump andhaving a reciprocating valve therein for the pump, a piston on the endof the valve stem, a removable head for the valve casing, and a cylinderfor said piston' carried by the head and removable Xvith it.

6. In an internal combustion engine, the combination of a shaft,cylinders located on opposite sides of the vertical plane of the shaft,pistons in the cylinders, rods connecting them to the shaft, an air pumplocated vertically over the shaft, a casing adjacent tlie pump andhaving a reciprocating valve there-in for the pump, a piston on the endof the valve stem, a removable head for the valve casing, a cylinder forsaid piston carried by the head and removable with it, and suction anddischarge valves for the last named cylinder also carried by the head.

T. ln an internal combustion engine, the combination of a crankshaft,'cylinders located on opposite sides of the vertical pla-ne of theshaft and in Vshaped relation to each other, pistons for the cylinderswhich are connected to the crank shaft, fuel injectors for thecylinders, an operating rod for each injector which extends along theside of the cylinder appurtenant to such injector and terminates at apoint directly adjacent the crank shaft, and a cam carried by .the crankv shaft which engages the operating rods for a. cylinder on each side ofthe crank shaft.

S. ln an internal combustion engine, the combination of a` crank shaft,cylinders located on opposite sides of the vertical plane of the shaftand in V-shaped relation to each other, pistons for the cylinders whichare connected t-o the crank shaft, fuel injectors for the cylinders, anoperating rod for each injector Which extends along the sideV of thecylinder appurtenant to such injector and terminates at a point'directly adjacent the crank shaft, and Acams carried by the crank shaftwhich engage the operating rods of tivo opposed cylinders.

S). ln an internal combustion engine. the combination of a base, a crankshaft journaled therein, t\\'o cylinders one on each side of thevertical plane of the shaft`aud in V-shaped relation to each other,pistons for the cylinders, rods connecting the pistons to bearings onthe crank shaft,a fuel injector for each cylinder, a fuel pump forsupplying fuel-to each injector, a cam on the shaft which actuates bothfuel4 injectors, and an eccentrnl on the shaft which actuates both fuelpumps. f

l0, In an internal combustion engine, the combination of a base, a shaftjournaled therein, a cylinder structure located on each side of thevertical plane of the shaft and in V-shaped relation to each other, eachstructure comprising tivo cylinders arranged side by side and having acommon combustion chamber, one of saidv cylinders being provided withadmission ports and the other with exhaustl ports, pistons in thecylinders which control said ports, a crank on the shaft having tvvobearing sections, one of Which, is an` gularly displaced slightlyrelative to the other, rods connecting the pistons to said bearingsections, the pistons of opposed cyl` inders being connected to the samevbearing section, the angular displacement of the one lvaring sectionover the other being such as to give the pistons controlling the exhaustports a lead over those controlling the scavenging ports, a fuelinjector for each cylinder structure, and a cam located on the shaft toone side of the crank for operating both injectors.

1l. In an internal combustion engine, the combination of a base, ashaftjournaled therein, a cylinder structure located on each side of theveftical plane of the shaft and in V-shaped relation to each other, eachstructure comprising two cylinders arranged side by side and having acommon combustion chamber, one vof said cylindersbeing provided withadmission ports and the other `with exhaust ports, pistons in thecylinders which control said ports, a crank on. the shaft having tvvobearing section,one of which is angular-ly displaced slightly relativeto t-he other, rods connecting the pistons to said bearing sections, thepistons of opposed cylinders being connected to the same bearingsection, the angular displacement of the one bearing section over theother being such as to give the pistons controlling the exhaust ports alead over those lcontrolling the -V scavenging ports, a. fuel injectorfor the shaft adjacent the crank for actuating both pumps.

with exhaust ports, pistons in the cylinders which control said ports, acra-nk on the shaft having two bearing sections, one of which isangularly displaced slightly relative to the other, and rods connectingthe pistons to said bearing sections, the pistons of opposed cylindersbeing connected to the same bearing section, the angular displacement ofone bearing section over the other being such as to give the pistonscontrolling the exhaust ports a lead over those controlling thescavengingports.

20. ln an internal combustion engine, the combination of a base, avshaft journaled therein, a cylinder' structure located on each side ofthe vertical plane of the shaft and in V-shaped relation to each other,each structure comprising two cylinders arranged side by side and havinga common combustion chamber, one of said cylinders being provided withadmission ports and the other with exhaust ports, pistons in thecylinders which control said ports, a crank on the shaft having twobearing sections, one of which is angularly displaced slightly relativeto the other, rods connecting the pistons to said vbearing sections, thepistons of opposed cylinders` being connected to the same bearingsection, the angular displacement of the one bearing section over theother being such as to give the pistons controlling the. exhaust portsa. lead over those controlling the scavenging ports, a pumping apparatushaving a reciprocating plunger arranged between the cylinders and overthe shaft, a bearing on said crank between the bearing sections, and arod connecting the pump plunger to it.

2l. In an, internal combustion engine, the combination of a base, asha-ft journaled therein, a cylinder structure located on each side ofthe vertical plane of the shaft and in 1l-shaped relation to each other,each structure comprising two cylinders arranged side by side and.iaving a common combustion chamber, one of said cylinders beingprovided with admission ports and the other with exhaust ports, pistonsin the cylinders which control said port-s, a crank on the shaft havingtwo bea-ring sections, one of which is angnlarly displaced slightlyrela.- tive to the other, rods connecting the pistons to said bearingysections, the pistons of opposed cylinders being connected to the samebearing section, the angular displacement of theone bearing section-overthe other being suoli as to give the pistons controlling the exhaustports a. lead over those controlling the scavenging ports, a scavengingreceiver, a pump located vertically over the shaft and between thecylinders for supplying air to the receiver, a reciprocating plunger'and a. reciprocating valve for the pump, al bearing on the crank towhich the plunger is connected7 and an eccentric on the .ciatedwith'each crankand located on shaft to one side of the crank to whichthe valve is connected.

Q9. In an internal combustion engine, the combination of a base, vashaft journaled therein and having a plurality of cranks, each crankhaving two bearing sections, one of which is angular-ly displacedslightly from the other, two cylinder' structures associated with eachcrank and located on oppositeA sides of the shaft in V-shaped relationto each other, each structure comprising two cylinders having a commoncombustion chamber, pistons in the cylinders, the pistons of opposedcylinders being connected to the same bearing section, a scavenging pumpand a compressor located between the cylinders vertically over theshaft, a bearing between the two sections of one of said 'cranks towhich said pump is connected, and a bearing between the two sections ofanother g5 of said cranks to which the compressor is connected. y

l 23. In an internal combustion engine, the combination of a base, ashaft journaled therein and having a plurality of cranks, each crankhaving two bearingsections, one of which is angular-ly displacedslightly from the other, two cylinder structures asso- OPPO' site sidesof the shaft in Vfshaped relation to each other, said structurecomprising two cylinders having a common combustion chamber, pistons inthe cylinders, the piston of opposed cylinders being connected to thesame bearing section, a scavenging 100 pump, a reciprocating valve forthe pump, and a compressor located side by side between the cylindersvertically over the crank shaft, a bearing between the two sections ofone crank shaft to which the pump is connected, an eccentric on theshaft to one side of such bearing to which the valve is connected, and abearing between the two sections of another of said cranks to which thecompressor is connected.

24. In an internal combustion engine, the combination of a base, a shaftjournaled therein and having a plurality of cranks, each crank havingtwo bearing sections, one of which is angularly displaced slightly fromthe other, two cylinder structures associated with each crank andlocated on opposite sides of the shaft in V-shaped relation to eachother, each structure comprising two cylinders having a commoncombustion chamber, pistons in the cylinders, the piston of opposedcylinders being connected to the samebearing section, a scavenging pump,a reciprocating valve for the pump, and a compressor located side byside between the cylinders vertically over the crank shaft, a bearingbetween the two sections of one crank shaft to which the pump isconnected, an eccentric on the shaft to one side of such bearing towhich the valve is connected, a

"bearing between zhe me seccion e cf ssl cianks 210 which the ce 1ccaenected a fue pump ici each cyime;

saic'mejx said pumps being arranged. in .5 paiijs, and an eccentric onthe shaft e gesuating each pair of fuei pumps.

n an inemai eombusiou engine, the combination of a. ba e, a. shiftjcuinaleci therein and having a piucality of @Heksy each crank having mebeaming sections, one of which is enguarly' displaced s'htiy imm theothera -We cylinder stmctuies associated with each eiaiik and located encppe-- sie sides of he shaft in' #shaped rein;

l to each other, each structure Compiising cyiines' having a commen vcombusm chamber, pistons in the cyine che pistens ci opposed cyindersbeing ccnnece izo the same bearing section, a scavenging pump7 a.recipoceng Valve for the piuipj` @cm1 essoi ioceed side by side le 5116,a @Veen che cyiindes ve? icelly wel" t;

E' emilie betweenfhe twc e 'to which the pu I v,me on inne slim..

combina in e i i piising two und having one of ,ming sexfilm s lacedions to smid wee ing sections,

crank between said bearing sections, a fuel injector for Athe cylinderstructure, an 0perzuing rod :for it which terminates at a point adjacentthe Shaft, and a cam On the shaft which eng-ages the operating rod to-nctunte the inj ector. y

31. In an internal combustion engine7 the combination of a` cylinder, apiston therein, a shaft haring a crank, :i rod connecting the piston tothe crank, ay reciprocating air pump having n cylinder and piston, a rodconnecting the pump piston to said crank crating th x air pump valve, afuel Valve for the engine cylinder, en Operating;` rod for it whichterminates at a point adjacent thev i shaft, and u cam on the shaft atthe other side of the crank which engages said 0perating rod to nctuatethe injector.

In witness `whereof, I have hereuntov set my hand this 31st day of July,1916.

WILLIAM EVERETT VER BALANCE.

